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  1. #1

    Default O2 Sensor Upgrade

    Any suggestions on a 4 wire O2 sensor upgrade? Going to long tube headers on my van, and the 1 wire from my donor Yukon isn't going to cut it. So looking to upgrade.

    Also anyone have experience with this upgrade? Just wire up a switched/fused power to the O2 heater and good to go?
    1986 Chevy G20 Tow Rig - 5.7 TBI conversion
    1978 Mustang II King Cobra Road Racer - Holley 650, MSD 6AL, 5 speed, 10 point Roll Cage, 9" posi, fuel cell, custom interior.

  2. #2


    FYI from my research and other forums, for anyone else wanting to upgrade:

    NGK sensors have typically the best reviews, an appropriate GM universal sensor is 29414 ($30 on ebay).
    Power it appears can be pulled from the injector power feed (on my app pink/black wire, universal switched 12v bus), or any other ignition based fused feed.
    Heater has no polarity, so one of the wires gets grounded, the other gets the switched 12v.
    Signal wire to the ECU, other sensor wire to ground.

    Will update after I get it installed.

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